package com.ma.web.admin;

import com.ma.po.Type;
import com.ma.service.TypeService;
import com.sun.org.apache.xpath.internal.operations.Mod;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;

@Controller
@RequestMapping("admin")
public class TypeController {

    @Autowired
    private TypeService typeService;

    //Pageable是spring boot封装好的前端数据
    //@PageableDefault 指定分页参数 按照id倒序排
    @GetMapping("/types")
    public String types(@PageableDefault(
            size = 5,sort = {"id"},direction = Sort.Direction.DESC)
                                    Pageable pageable,
                        Model model){

        model.addAttribute("page",typeService.listType(pageable));
        return "admin/types";
    }


    //进入编辑分类页面
    @GetMapping("/types/{id}/input")
    public String editInput(@PathVariable Long id, Model model){
        model.addAttribute("type",typeService.getType(id));
        return "admin/types-input";
    }
    //编辑分类提交
    @PostMapping("/types/{id}")
    public String editPost(@Valid Type type,BindingResult result,
                           @PathVariable Long id, RedirectAttributes attributes){
        Type type1 = typeService.getTypeByName(type.getName());
        //添加数据重复验证！
        if(type1!=null){
            result.rejectValue("name","nameError","该分类已存在，请勿重复添加！");
        }

        if (result.hasErrors()){
            return "admin/types-input";
        }

        Type t = typeService.updateType(id, type);
        if(t == null){
            attributes.addFlashAttribute("message","修改失败");
        }else {
            attributes.addFlashAttribute("message","修改成功");
        }
        return "redirect:/admin/types";
    }

    //进入新增分类页面
    @GetMapping("/types/input")
    public String input(Model model){
        model.addAttribute("type",new Type());
        return "admin/types-input";
    }
    //新增分类
    @PostMapping("/types")
    public String post(@Valid Type type, BindingResult result, RedirectAttributes attributes){

        Type type1 = typeService.getTypeByName(type.getName());
        //添加数据重复验证！
        if(type1!=null){
            result.rejectValue("name","nameError","该分类已存在，请勿重复添加！");
        }

        if (result.hasErrors()){
            return "admin/types-input";
        }

        Type t = typeService.saveType(type);
        if(t == null){
            attributes.addFlashAttribute("message","新增失败");
        }else {
            attributes.addFlashAttribute("message","新增成功");
        }
        return "redirect:/admin/types";
    }

    @GetMapping("/types/{id}/delete")
    public String delete(@PathVariable Long id, RedirectAttributes attributes){
        typeService.deleteType(id);
        attributes.addFlashAttribute("message","删除成功");
        return  "redirect:/admin/types";
    }
}
